JPH0220268Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a concrete formwork device that is mainly suitable for construction on slopes and the like.

``Prior Art'' As one of the reinforcement works for sloped ground such as slopes, facilities such as concrete slopes are used. As formwork for constructing such concrete structures, lightweight, disposable cardboard made of waterproof and reinforced cardboard has come to be used instead of formwork boards such as metal platforms and plywood boards. Ta.

However, simple form boards such as cardboard,
Since the strength is weak, it is necessary to use a lot of reinforcing materials, which not only requires a lot of effort to assemble and dismantle the formwork, but also has many problems such as the cost of reinforcing materials and other materials is large. was.

``Problems to be solved by the invention'' This invention improves the shortcomings of the conventional simple formwork as described above, and simplifies the formwork structure by using weak and disposable formwork plates. The present invention aims to provide a simple formwork device that reduces the use of reinforcing materials, has high strength, is easy to handle, and can reduce construction costs.

``Means for Solving the Problems'' The formwork device of the present invention includes a separator having a wedge insertion portion at the end and a receiving portion for the formwork board inside the separator, and a separator that is spaced apart vertically and longitudinally. A formwork plate is provided with a through hole through which the wedge insertion portion of the separator passes, and a hook portion is formed at the upper end portion of the formwork plate to fit the upper edge of the formwork plate, and the hook portion corresponds to the throughhole of the formwork plate. an upper reinforcing rod having a through-hole through which the wedge insertion part is inserted, and a horizontal piece formed by cutting the upper part of the through-hole outward and having a wedge insertion hole therein, and a wedge insertion hole in the horizontal part. At the same time, a lower reinforcing rod having an L-shaped cross section is provided with a through hole in the vertical part for passing the wedge insertion part of the separator, and a lower reinforcing rod that passes through the wedge insertion part of the separator and the wedge insertion holes of the upper reinforcing rod and the lower reinforcing rod. It is characterized by consisting of a wedge rod that can be inserted.

"Embodiments" Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In the figure, 1 is a separator, which is bent inwardly into a U-shape at both ends of a horizontally long rod 2 to form a wedge insertion part 3, and the terminal part is bent to form a receiving part 4 for the formwork plate.
is formed. The separators 1 are vertically connected to each other by connecting bars 5 at a required interval. Note that these upper and lower separators 1, 1 may be provided as separate pieces.

Reference numeral 6 denotes a form board, which is generally made of disposable, lightweight and inexpensive cardboard, and is treated with water-resistance, for example, with paraffin wax. Further, a plywood board or a plastic board can also be used as the formwork board 6. The formwork plate 6 is provided with wedge insertion portions 2 of the separators 1, 1.
Through-holes 7, 7 are provided vertically at required intervals, and these through-holes 7, 7 pass through the formwork plate 6.
A plurality of holes are provided at required intervals in the longitudinal direction.

Reference numeral 8 denotes an upper reinforcing rod, and the upper end of the strip plate is bent into a U-shape to form a hook portion 9 that fits the upper edge of the form plate 6. Frame board 6
Through-holes 10, 10 through which the wedge insertion portions 3 of the separator 1 are inserted are provided at intervals in the longitudinal direction at positions corresponding to the through-holes 7, 7. A horizontal piece 11 formed by cutting and raising a band-shaped plate is protruded directly above the through-hole 10, and a wedge insertion hole 12 corresponding to the wedge insertion part 3 is provided in this horizontal piece 11. Also, 1
Reference numeral 3 denotes a lower reinforcing rod that is attached along the longitudinal direction of the outside of the lower part of the formwork plate 6, and is formed in a substantially L-shaped cross section, and has a horizontal part that corresponds to the wedge insertion hole 12 of the upper reinforcing rod 8. A wedge insertion hole 14 is provided at the top, and a through hole 15 through which the wedge insertion portion 3 of the separator 1 is inserted is provided at the vertical portion thereof.

Furthermore, 16 is a wedge rod, which has a length to pass through the wedge insertion holes 3, 3 of both separators 1, 1 that protrude from the upper and lower through holes 7, 7 of the form plate 6, and its upper end. A projecting piece 17 directed outward is provided on the portion.

Note that, as shown in FIG. 3, the upper reinforcing rod 8 and the lower reinforcing rod 13 can be foldably connected to each other by a continuous rod 20.

The formwork device of the present invention includes the separator 1 described above,
It is composed of a form plate 6, an upper reinforcing rod 8, a lower reinforcing rod 13, and a wedge rod 16, and is assembled by inserting the wedge insertion portions 3 of the separators 1, 1 into the through holes 7, 7 of the form plate 6, respectively. , 3, and the hook part 9 of the upper reinforcing rod 8
is fitted to the upper edge of the formwork plate 6, and the through-hole 1
0 through the wedge insertion part 3 and attach the upper reinforcing rod 8, and insert the through hole 15 of the lower reinforcing rod 13 into the formwork plate 6.
The separator 1 is passed through the wedge insertion portion 3 of the separator 1 protruding from the through-hole 7 at the lower part of the separator 1 and joined to the formwork plate 6. and,
The wedge rod 16 is inserted from above into the wedge insertion hole 12 of the upper reinforcing rod 8, the wedge insertion portion 3 of the upper separator, the wedge insertion hole 14 of the lower reinforcing rod 13, and the wedge insertion portion 3 of the lower separator.

FIG. 4 shows an example in which another embodiment is used as the upper reinforcing rod 8, in which the shape of the hook portion 9 of the upper reinforcing rod 8 is different from that of the previous embodiment.
That is, the upper end surface 9a of the hook portion 9 is extended longer than the thickness of the form board 6, and the downwardly extending portion thereof is folded inward to form an inclined portion 9b. Therefore, concrete 1
When the formwork is removed after pouring the concrete 8, chamfers 19 are formed on both sides of the upper end of the hardened concrete 16 due to the sloped portion 9b of the upper reinforcing rod 8.

In all of the above-mentioned embodiments, a straight plate is applied to the formwork plate 6, and therefore, the upper reinforcing rod 8
Correspondingly, the lower reinforcing rod 13 is also straight. However, the form plate 6 is not limited to such a straight shape. Many concrete legal frame structures are formed in a lattice shape, and the present invention is also applicable to this. In such a case, the frame plate 6 is assembled as a whole in the form of an encircling core. Figure 5,
FIG. 6 shows an example of a formwork device suitable for such a case.

That is, since the form plate 6 is bent and formed into a core shape of a desired shape, for example, as shown in FIG. 5, the upper reinforcing rod 8 and the lower reinforcing rod 13 Four pieces of the same shape are bent 20 in the longitudinal direction to fit the frame plate 6 and are attached to the form plate 6. Further, as shown in FIG. 6, each reinforcing rod 8, 13 may be joined at the center of each side of the formwork board 6, and in this case, each reinforcing rod 8, 13 is approximately dogleg-shaped. It is bent and formed. Although not shown in the drawings, if the shape of the core-shaped formwork plate 6 is square, each reinforcing rod 8, 13 should be straight and the reinforcing rods 8, 13 should be joined at the corners of the formwork. You can also.

In the embodiments shown in FIGS. 5 and 6, the same separator 1 and wedge rod 16 as in the previous embodiment can be used.

"Operation" The present invention is constructed as described above, and after the formwork is assembled, concrete is poured between the formwork plates 6, 6. After the concrete hardens, the wedge rod 16 is removed by tapping its protruding piece 17, and the upper reinforcing rod 8 is removed.
and the lower reinforcing rod 13 are removed from the separator 1 or the formwork plate 6, respectively. Then, the form board 6 is peeled off from the concrete. In addition, the formwork board 6
If a durable plywood board or the like is used, it can be used repeatedly.

"Effect of the invention" As explained above, the formwork device of the present invention is a formwork using a lightweight formwork board with low strength, and is provided with a hook portion that fits over the upper edge of the formwork board. The upper reinforcing rod and the L-shaped lower reinforcing rod are joined to the upper and lower parts of the formwork board, and both reinforcing rods and the wedge insertion part of the separator are connected together with the wedge rod. The formwork plates are strongly reinforced and the formwork assembly is strong, making it possible to sufficiently withstand the lateral pressure of poured concrete.Moreover, it is not necessary to use a large number of batten materials as in the past. It is possible to provide a simple formwork device that has a simple structure, requires less materials, is easy to assemble and dismantle, and can greatly reduce construction costs as a whole.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view showing one embodiment of the device of the present invention, Fig. 2 is a plan view showing the same part cut away, and Fig. 3 is a side sectional view showing an embodiment of the device of the present invention.
The figure is a perspective view showing each member separated, FIG. 4 is a partial side sectional view showing another embodiment, and FIG. 5 is a plan view showing an embodiment in which the formwork is core-shaped. FIG. 6 is a plan view showing another embodiment. 1... Separator, 3... Wedge insertion part, 4... Receiving part, 6... Form board, 7... Through hole, 8... Upper reinforcing rod, 9... Hook part, 11... Horizontal piece, 13... lower reinforcing rod, 16... wedge rod.

Claims (1)

[Scope of utility model registration request] A separator having a wedge insertion portion at its end and a receiving portion for a formwork plate inside the separator, and a mold having through holes spaced apart in the vertical and longitudinal directions through which the wedge insertion portions of the separator are inserted. forming a frame plate and a hook portion on the upper end portion thereof into which the upper end edge of the form plate is fitted, and providing a through hole through which a wedge insertion portion of the separator is inserted in correspondence with the through hole of the form plate; The upper reinforcing rod has a wedge insertion hole in the horizontal piece cut upward from the upper part of the through hole, and a wedge insertion hole in the horizontal part and a through hole in which the wedge insertion part of the separator passes through the vertical part. A concrete mold characterized by comprising a lower reinforcing rod having an L-shaped cross section and a hole, and a wedge rod inserted through the wedge insertion part of the separator and the wedge insertion holes of the upper reinforcing rod and the lower reinforcing rod. frame device.